Acid And Alkalis Flashcards
0
Q
Why is the universal indicator a better indicator to use the the litmus indicator?
A
Universal indicators give the pH of the solution
1
Q
What is the colour of red cabbage indicator when placed in vinegar?
A
Red
2
Q
What colour would hydrochloric acid (pH1) turn universal indicator?
A
Red
3
Q
What type of litmus paper is used to test acids?
A
Blue
4
Q
Materials with a pH less than 7 are…..
A
Acidic
5
Q
A solution with a pH7 are…….
A
Neutral
6
Q
The value that is given to a substance to indicate how strong or weak an acid or alkali is known as the…..
A
pH number
7
Q
A pH value of 6 indicates that the substance is a…..
A
Weak acid
8
Q
A pH value of 14 indicates that the substance is a……
A
Strong alkali
9
Q
On a pH scale 1-6 is…..
A
Acids
10
Q
On a pH scale 8-14 is…
A
Alkalis
11
Q
On a pH scale 7 is known as…
A
Neutral
